The side of a square is 2.5 cm. Find its perimeter and area.

Perimeter = 10 cm

Area = 6.25 cm²

Step-by-step explanation:

So to find the Perimeter of the square, we'll use this formula :

Hence, the perimeter would be 10 cm .

We know that the formula of Area to find the square is,

Note : The answer would always be in cm².

Hence, the area of the square would be 6.25 cm².

We are done !

I hope this helps!

Let me know if you have any questions.

:D

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

step-by-step explanation: